[openwrt/openwrt] ath79: nand: add 5.15 support for nand subtarget

[LEDE Commits]

xback pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/f3fa68e5153bda9e443cc7300ad40615565ce26b

commit f3fa68e5153bda9e443cc7300ad40615565ce26b
Author: Koen Vandeputte <koen.vandeputte at ncentric.com>
AuthorDate: Wed Apr 13 11:58:44 2022 +0200

    ath79: nand: add 5.15 support for nand subtarget
    
    Tested on GL.iNet E750
    
    Signed-off-by: Koen Vandeputte <koen.vandeputte at ncentric.com>
---
 target/linux/ath79/nand/target.mk | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/target/linux/ath79/nand/target.mk b/target/linux/ath79/nand/target.mk
index 7ea9b57f45..12694b6013 100644
--- a/target/linux/ath79/nand/target.mk
+++ b/target/linux/ath79/nand/target.mk
@@ -4,6 +4,8 @@ FEATURES += nand
 
 DEFAULT_PACKAGES += wpad-basic-wolfssl
 
+KERNEL_TESTING_PATCHVER:=5.15
+
 define Target/Description
 	Firmware for boards using Qualcomm Atheros, MIPS-based SoCs
 	in the ar72xx and subsequent series, with support for NAND flash